import time
from datetime import datetime, timedelta

from flask import render_template, request, current_app, session, g, redirect, url_for, jsonify

from info import user_login_data, constants, db
from info.models import User, News, Category
from info.response_code import RET
from info.utils.image_storge import storage
from . import admin_blu


@admin_blu.route('/index')
@user_login_data
def admin_index():
    user = g.user
    return render_template('admin/index.html', data={'user_info': user.to_dict()})


@admin_blu.route('/login', methods=['GET', 'POST'])
def admin_login():
    """超级用户登录"""
    if request.method == 'GET':
        # 去session中取指定的值
        user_id = session.get('user_id', None)
        is_admin = session.get('is_admin')
        if user_id and is_admin:
            return redirect(url_for('admin.admin_index'))
        return render_template('admin/login.html')

    admin_user_name = request.form.get('username')
    password = request.form.get('password')

    if not all([admin_user_name, password]):
        return render_template('admin/login.html')

    try:
        user = User.query.filter(User.mobile == admin_user_name).first()
    except Exception as e:
        current_app.logger.error(e)
        return render_template('admin/login.html', errmsg='数据库查询失败')

    if not user:
        return render_template('admin/login.html', errmsg='用户不存在')

    if not user.check_passowrd(password):
        return render_template('admin/login.html', errmsg='密码错误')

    if not user.is_admin:
        return render_template('admin/login.html', errmsg='权限不足')

    session['user_id'] = user.id
    session['mobile'] = user.mobile
    session['nick_name'] = user.nick_name
    session['is_admin'] = True

    # 去到后台管理主页
    return redirect(url_for('admin.admin_index'))


@admin_blu.route('/user_count')
def user_count():
    """用户统计"""
    # 查询总数
    total_count = 0
    try:
        total_count = User.query.filter(User.is_admin == False).count()
    except Exception as e:
        current_app.logger.error(e)

    # 查询月新增数
    mon_count = 0
    try:
        now = time.localtime()
        mon_begin = '%d-%02d-01' % (now.tm_year, now.tm_mon)
        mon_begin_date = datetime.strptime(mon_begin, '%Y-%m-%d')
        mon_count = User.query.filter(User.is_admin == False, User.create_time >= mon_begin_date).count()
    except Exception as e:
        current_app.logger.error(e)

    # 查询日新增数
    day_count = 0
    try:
        now = time.localtime()
        day_begin = '%d-%02d-%02d' % (now.tm_year, now.tm_mon, now.tm_mday)
        day_begin_date = datetime.strptime(day_begin, '%Y-%m-%d')
        day_count = User.query.filter(User.is_admin == False, User.create_time > day_begin_date).count()
    except Exception as e:
        current_app.logger.error(e)

    # 查询图表信息
    # 获取到当天00:00:00时间

    now_date = datetime.strptime(datetime.now().strftime('%Y-%m-%d'), '%Y-%m-%d')
    # 定义空数组，保存数据
    active_date = []
    active_count = []

    # 依次添加数据，再反转
    for i in range(0, 31):
        begin_date = now_date - timedelta(days=i)
        end_date = begin_date + timedelta(days=1)
        active_date.append(begin_date.strftime('%Y-%m-%d'))
        count = 0
        try:
            count = User.query.filter(User.is_admin == False, User.last_login >= begin_date,
                                      User.last_login < end_date).count()
        except Exception as e:
            current_app.logger.error(e)
        active_count.append(count)

    active_date.reverse()
    active_count.reverse()
    data = {
        'total_count': total_count,
        'mon_count': mon_count,
        'day_count': day_count,
        'active_date': active_date,
        'active_count': active_count
    }
    return render_template('admin/user_count.html', data=data)


@admin_blu.route('user_list')
def user_list():
    """用户列表统计"""
    page = request.args.get('page', 1)
    try:
        page = int(page)
    except Exception as e:
        current_app.logger.error(e)
        page = 1
    current_page = 1
    total_pages = 1

    users = []
    try:
        paginate = User.query.filter(User.is_admin == False).order_by(User.last_login.desc()) \
            .paginate(page, constants.ADMIN_USER_PAGE_MAX_COUNT, False)
        users = paginate.items
        total_pages = paginate.pages
        current_page = paginate.page
    except Exception as e:
        current_app.logger.error(e)

    user_dict_li = []
    for user in users:
        user_dict_li.append(user.to_admin_dict())

    data = {
        'total_pages': total_pages,
        'current_page': current_page,
        'users': user_dict_li
    }
    return render_template('admin/user_list.html', data=data)


@admin_blu.route('/news_review')
def news_review():
    """返回待审核新闻列表"""
    page = request.args.get('page', 1)
    keywords = request.args.get('keywords', '')
    try:
        page = int(page)
    except Exception as e:
        current_app.logger.error(e)
        page = 1
    current_page = 1
    total_pages = 1

    news_list = []
    try:
        filters = [News.status != 0]

        # 添加关键字的检索
        if keywords:
            filters.append(News.title.contains(keywords))

        paginate = News.query.filter(*filters).order_by(News.create_time.desc()) \
            .paginate(page, constants.ADMIN_NEWS_PAGE_MAX_COUNT, False)
        news_list = paginate.items
        total_pages = paginate.pages
        current_page = paginate.page
    except Exception as e:
        current_app.logger.error(e)

    news_dict_li = []
    for news in news_list:
        news_dict_li.append(news.to_review_dict())

    data = {
        'total_pages': total_pages,
        'current_page': current_page,
        'news_dict': news_dict_li
    }
    return render_template('admin/news_review.html', data=data)


@admin_blu.route('/news_review_detail', methods=['POST', 'GET'])
def news_review_detail():
    """返回待审核新闻详情"""
    if request.method == 'GET':
        news_id = request.args.get('news_id')
        if not news_id:
            return render_template('admin/news_review.html', data={'errmsg': '参数错误'})

        try:
            news = News.query.get(news_id)
        except Exception as e:
            current_app.logger.error(e)
            return render_template('admin/news_review.html', data={'errmsg': '未查询到此新闻'})

        return render_template('admin/news_review_detail.html', data={'news': news.to_dict()})

    news_id = request.json.get('news_id')
    action = request.json.get('action')

    if not all([news_id, action]):
        return jsonify(errno=RET.PARAMERR, errmsg='参数错误')

    if action not in ['accept', 'reject']:
        return jsonify(errno=RET.PARAMERR, errmsg='参数错误')

    try:
        news = News.query.get(news_id)
    except Exception as e:
        current_app.logger.error(e)
        return jsonify(errno=RET.DBERR, errmsg='查询失败')

    if not news:
        return jsonify(errno=RET.NODATA, errmsg='新闻不存在')

    if action == 'accept':
        news.status = 0
        return jsonify(errno=RET.OK, errmsg='恭喜,审核通过')
    else:
        try:
            reason = request.json.get('reason')
        except Exception as e:
            current_app.logger.error(e)
            return jsonify(errno=RET.PARAMERR, errmsg='参数错误')
        if not reason:
            return jsonify(errno=RET.NODATA, errmsg='请说明不通过原因')

        news.status = -1
        news.reason = reason
        return jsonify(errno=RET.OK, errmsg='审核未通过')


@admin_blu.route('/news_edit')
def news_edit():
    """新闻版式编辑"""
    page = request.args.get('page', 1)
    keywords = request.args.get('keywords', '')
    try:
        page = int(page)
    except Exception as e:
        current_app.logger.error(e)
        page = 1
    current_page = 1
    total_pages = 1

    news_list = []
    try:
        filters = []

        # 添加关键字的检索
        if keywords:
            filters.append(News.title.contains(keywords))

        paginate = News.query.filter(*filters).order_by(News.create_time.desc()) \
            .paginate(page, constants.ADMIN_NEWS_PAGE_MAX_COUNT, False)
        news_list = paginate.items
        total_pages = paginate.pages
        current_page = paginate.page
    except Exception as e:
        current_app.logger.error(e)

    news_dict_li = []
    for news in news_list:
        news_dict_li.append(news.to_basic_dict())

    data = {
        'total_pages': total_pages,
        'current_page': current_page,
        'news_dict': news_dict_li
    }
    return render_template('admin/news_edit.html', data=data)


@admin_blu.route('/news_edit_detail', methods=['GET', 'POST'])
def news_edit_detail():
    """返回编辑新闻详情"""
    if request.method == 'GET':
        news_id = request.args.get('news_id')
        if not news_id:
            return render_template('admin/news_edit.html', data={'errmsg': '参数错误'})
        try:
            news = News.query.get(news_id)
        except Exception as e:
            current_app.logger.error(e)
            return render_template('admin/news_edit.html', data={'errmsg': '未查询到此新闻'})

        # 查询分类
        categories = Category.query.all()
        cate_list = []
        for category in categories:
            c_dict = category.to_dict()

            # 获取选中新闻分类
            c_dict['is_selected'] = False
            if category.id == news.category_id:
                c_dict['is_selected'] = True
            cate_list.append(c_dict)

        # 移除'最新'新闻分类
        cate_list.pop(0)
        data = {
            'news': news.to_dict(),
            'cate_list': cate_list
        }
        return render_template('admin/news_edit_detail.html', data=data)

    news_id = request.form.get('news_id')
    title = request.form.get('title')
    category_id = request.form.get('category_id')
    digest = request.form.get('digest')
    index_image = request.files.get('index_image')
    content = request.form.get('content')

    if not all([title, category_id, digest, content]):
        return jsonify(errno=RET.PARAMERR, errmsg='参数错误')

    try:
        news = News.query.get(news_id)
    except Exception as e:
        current_app.logger.error(e)
        return jsonify(errno=RET.DBERR, errmsg='查询错误')

    if not news:
        return jsonify(errno=RET.NODATA, errmsg='未查询到此新闻')

    # 读取图片
    if index_image:
        try:
            index_image = index_image.read()
        except Exception as e:
            current_app.logger.error(e)
            return jsonify(errno=RET.PARAMERR, errmsg="参数有误")

        # 2. 将标题图片上传到七牛
        try:
            key = storage(index_image)
        except Exception as e:
            current_app.logger.error(e)
            return jsonify(errno=RET.THIRDERR, errmsg="上传图片错误")
        news.index_image_url = constants.QINIU_DOMIN_PREFIX + key

    # 设置数据
    news.title = title
    news.category_id = category_id
    news.digest = digest
    news.content = content

    return jsonify(errno=RET.OK, errmsg='编辑成功')


@admin_blu.route('/news_type', methods=['GET', 'POST'])
def news_type():
    if request.method == 'GET':
        categories = Category.query.all()
        category_list = []
        for category in categories:
            category_list.append(category.to_dict())

        data = {
            'categories': category_list
        }
        return render_template('admin/news_type.html', data=data)

    category_id = request.json.get('id')
    category_name = request.json.get('name')

    if not category_name:
        return jsonify(errno=RET.PARAMERR, errmsg='参数错误')

    if category_id:
        try:
            category = Category.query.get(category_id)
        except Exception as e:
            current_app.logger.error(e)
            return jsonify(errno=RET.DBERR, errmsg='查询错误')

        if not category:
            return jsonify(errno=RET.NODATA, errmsg='未查询到分类信息')

        category.name = category_name

    else:
        # 添加分类
        category = Category()
        category.name = category_name
        db.session.add(category)

    return jsonify(errno=RET.OK, errmsg='OK')
